Low voltage + outdoor exposure

Landscape light bulb replacement guide

Reviewed August 28, 2026
Answer

Match voltage, base, reflector size, beam angle and outdoor rating. Many landscape systems use 12 V, but the printed transformer and lamp labels decide.

Low-voltage landscape spotlight illuminating plants beside a path
Read the transformer output and fixture rating before matching the lamp's voltage, base, and beam.

Bases you may encounter

These are common possibilities, not a substitute for the model documentation.

What to read on the old lamp and fixture

  1. Switch off the landscape transformer.
  2. Read its output type and voltage.
  3. Match pin spacing, lamp dimensions and beam angle.
  4. Check the fixture seal and required damp or wet rating.